The Werewolf mod for 1.8 adds the ability to transform into a werewolf. This brings increased strength and speed but also has some drawbacks. You can level up your strength and speed by increasing your savagery level.
Download the Howling Moon Mod for 1.8:
Howling Moon mod for 1.8
Forge for 1.8
Installation:
Locate your Minecraft.jar file.
If you haven’t already installed Forge, drag the files from the forge zip file into Minecraft.jar.
Run Minecraft once
Drag the mod to the .minecraft/mods...